Wrench



Feb; 19, 1924. 1,484,132

c. M. JdNE s' WRENCH Filed March 50-, 1923 IIIIII,

Patented Feb. 19, 1924.

ET s CLAYTON M. JONES, or JAMESTOWN,-NEW roux. I

WRENCH.

Original application filed May 20, 1922, Seria1 NoJ562,35 2. Dividedandthis application filed March 36, 2

1923. Serial No. 628,812. I

To all whom it may concern:

Be it known that I, CLAYTON M. JONES, citizen of the United States,residing at lamestown, in the county of Chautauqua and 5 State of NewYork, have invented certain 1 new and useful Improvements inlVrenches,of which the following is a specification.

This invention relates to certain new and useful improvements inwrenches and is a di- 10 vision of my application for patent filed May20, 1922, Serial No. 562,352.

The primary object of the invention is to provide a wrench structure ofgreatly increased strength and at the same time one of greatly cheapenedcost, and further a structure of. wrench which permits the use of apaneled handle extending into the sides of the fixed jaw or head tothereby effect not only savingv of material but to also eliminate anarea on the handle and head entailing difficulty and expense inpolishing, the paneling at the same time providing a countersunk portionsurrounding a por- 7 tion of the knurl, sothat the latter can be easilyrotated bythethumb and forefinger,

but still is protected from accidental rotation, since the rotatingsurface of the knurl is positioned below the flat surface of the wrenchhead. This structure also improves the appearance, and consequentlyenhances the salability of the wrench, and in addition lightens theweight thereof.

A further object of the invention is to provide a wrench structure whichinvolves a materially simplified and inexpensive form of screw foreffecting adjustment of the movable jaw, which screws can be made inquantity production" and which eliminate the necessity of positioningthe knurl or the screw by means of the very expensive tapping ofcorresponding threads in the knurl and the necessity. of placing aslotin the end of screw as a means of screwing the knurl into position andalso eliminating further fastening of the knurl by means of a cotterpin,a tap screw or other method of preventing the knurl from rotating on thescrew, all of which are very expensive operations. The result of theabove construction is a very simplified form of screw and shank andknurl, eliminating entirely all tapped threads and greatly reducing thecost.

A still further object of the invention is to afford a simplified andeasily drilled bore for the screw which extends short of a side of thehead to thus not only save the cost of complete drilling of the bore,but to also leave a strong wall which protects the adjacent end of thescrew; which prevents the c bore from being jammed or upset therebypreventing the rotating action of the screw, and which confineslubricant for the screw and protects the latter against the ingress ofdirt and other foreign matter likely to impair easy and efficientoperation of the screw. ,.v

The invention has still further and other objects which will be laterset forth and manifested in the course offthe following description. I Ic In the drawings :,v I I Figure 1, is a side elevation of the,invention; I

Figure 2,.is vation; I I I II Figure 3, is a similar view of the rearedge; I f n t Figure 4:, is a'fragmentary vertical sectionalview; t I

Figure 5; is a view similar to Figure 4 of a modified form of theihvention; and

Figure 6, 'isa fragmentary front edge ele- I a fragmentary front edgeele- 7- vationof Figure 5. I I I I In proceeding in accordance with thepresentinvention, a handle" 10' is provided with a head liformedwith arigid jaw 12 7 having an angular brace '13,'tl ie'lattertbe w ingslotted atl l. The head 11 is formed with an upper barrel Or bore 15 anda lower barrel orbore 17 the barrel being interconnectedbya slot 20. Theslot 14 extends through the rear end of the barrel 15 and substantiallythroughout the length ofthe latter. The barrels 15 and 17 are formed bydrilling operations, for vwhich purpose the head 11 is originally made"with projections 19 having fiat end faces to afford drill seats, theprojections being subsequently removed by cutting or grinding infinishing I of the tool. I

The barrel 15 extends throughout the length of the wrench head andthrough the ends thereof, while the barrel 17 extends from the frontside of the head to a point spaced from the rear side so as to leave a 7solid wall 11 which closes the rear end of the barrel 17 This 'wall' 11greatly strengthens the structure and allows the panels 10 on oppositesides of the handle to extend upwardly into the head 11. The

panels are formed by countersinking the handle and head sides. 'Theinner end of the barrel 17 terminates at the inner side of an opening 18which latter intersects the barrel 17 and has itsouter wall defined bythe inner face of the wall 11".

The adjustable jaw 16 has an angular web 21 formed with a cylindricalrack 21 having teeth 22, the rack being received in barrel 15 while theteeth 22 thereof extend into the barrel 1?, the web being received inthe slot 1 1.

A screw 23 is provided having a shank 25 to which latter a knurl 2 1 isaflixed in any desired manner, the drawing by way of exampleillustrating the knurlas being cold shrunk onto the shank, as setforthin my sa d a pl at onh $163 14 is f r y a saw-cut.

In the form of: the invention depicted in Figures and 6 of the drawingsthe 1 front end of the upper barrel 15.v is partially closed asindicatedat 27, so as to further strengthen the wrench head, and protectthe end o't'thecylindrical rack 21 and upper barrel from being upset by.blows if the wrench is. used as a hammer, which blows will'impair orprevent free movement of the. movable jaw, as well as kee ing out dirtand retaining lubricants. Int form of the invention the barrel 15 isdrilled from the rear end of the wrench head and the slot27 is formed bythe. saw which cuts the slot 1 1. i The. screw, is deYQid of either ascrewdriver receiving slot. or. kerf or any other m an f ecur g samei'po ti' or f r attaching the knurl thereto by; extraneous fasteningsconsequently the screws and 'kn'urls can be cheaply made quantityproductiOnQ,

, In assembly, the movable jaw is. placed in position, the knurl heatedand positioned in its opening 18, whereupon, the screwis inserted'in thelower barrel 17, and turned tofengage with the'rack teeth 22 until theshank" 25 is completely inserted in the knurl opening, whereupon theknurl is chilled, causing same to be cold-shrunk onto the screw stem. Y

rett 'e r is he estd the lower barrel terminates short of the wall 11,andf'that the screw is adorded a bearing throughout the length of thelower barrel, also the knurled nut or knurl is carried by the inner endor the screw which latter end is completely housed by the knurl, thusdispensing with the provision or" a distinct bearing for each end of thescrew, as generally practiced in the art.

What is claimed is 2- 1. In a wrench, a handle having a head formed witha fixed jaw and upper and lower communicating barrels and also having atransverse opening intersecting the lower barrel and spaced from therearend oi the head to provide an integral wall, a movable jaw having arack fitted in the upper barrel and having its teeth extending into thelower barreha perforated knurled nut in the opening, and a screw in thelower barrel having a shank rigidly secured in said perforation of thenut and spaced from said wall of the head, said. wall extendingcompletely over the outer end of the screw shank so as to conceal same.

2. In a wrench, a handle having a head formed with a fixed jaw andupperand lower communicating barrels andralso having a transverse openingintersecting the lower barrel and spaced from the rear end of the head.to provide an integral wall, a movable jaw having a rack fitted in theupper barrel and. having its teeth extending into the lower barrel, aperforated knurled nut in the opening, and a screw in the lower 1opposite side faces extending at the upper" ends thereof into the head,and at least to the axis of the knurl so as to afford access to thelatter in rotation thereof, the respective inner sides of the integralwall bounding theadjacent upper end portions of the correspondingpanel-forming'parts.

In testimony whereof I aflix my signature.

CLAYTON M. Jones.

